<template>
    <div class="PostList">
        <!--在数据未返回的时候，显示这个正在加载的gif-->
        <div class="loading" v-if="isLoading">
            <img src="../assets/loading.gif.gif" alt="">
        </div>
        <!--代表我門的主题帖子列表-->
        <div class="posts">
            <ul>
                <li>
                    <div class="toobar">
                    <span @click="changeTab">全部</span>
                    <span @click="changeTab">精华</span>
                    <span @click="changeTab">分享</span>
                    <span @click="changeTab">问答</span>
                    <span @click="changeTab">招聘</span>
                    </div>
                </li>
                <li  v-for="post in posts">
                    <!--头像-->
                <img :src="post.author.avatar_url" alt="">
                 <!--回复/浏览-->
                <span class="allcount">
                <span class="reply_count">{{post.reply_count}}</span>
                     /{{post.visit_count}}
                </span>
                <!--帖子的分类-->
                <span :class="[{put_good:(post.good  == true),put_top:(post.top  == true),
                 'topiclist-tab':(post.good  != true && post.top  != true)}]">
                <span>
                    {{post | tabFormatter}}
                </span>
        </span>
                <!--标题-->
                        <router-link :to="{
                        name:'post_content',
                        params:{
                        id:post.id,
                        name:post.author.loginname
                        }
                        }">
                            <span>
                            {{post.title}}
                            </span>    
                        </router-link>
                <!--最終回复时间-->
                <span class="last_reply">
                    {{post.last_reply_at | formatDate}}
                </span>
                </li>
                <li>
                    <pagination @handleList="renderList"></pagination>
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import pagination from './Pagination'
export default {
    name:"PostList",
    data(){
        return{
            isLoading:false,
            posts:[],//代表页面的列表数组
            postpage:1,
             tab: ""
        }
    },
    components:{
        pagination
      },
    methods:{
        getData(){
            this.$http.get('https://cnodejs.org/api/v1/topics',{
                params:{
                page:this.postpage,
                limit:20,
                tab: this.tab
                }
            })
            .then(res=>{
                this.isLoading = false; //加载成功，去除动画
                this.posts = res.data.data
            })
            .catch(function(err){
                console.log(err)
            })
        },
        renderList(value){
          this.postpage = value;
          this.getData();
        },
        changeTab(e) {
      console.log(e.currentTarget.innerText);
      switch (e.currentTarget.innerText) {
        case "全部":
          this.tab = "all";
          this.getData();
          break;
        case "精华":
          this.tab = "good";
          this.getData();
          break;
        case "分享":
          this.tab = "share";
          this.getData();
          break;
        case "问答":
          this.tab = "ask";
          this.getData();
          break;
        case "招聘":
          this.tab = "job";
          this.getData();
          break;
      }
      return
     }
    },
    beforeMount(){
        this.isLoading = true;//加载成功之前显示加载动画
        this.getData();//在页面加载之前获取数据
      }
}
</script>


<style scoped>

 .PostList{
    background-color: #e1e1e1;
  }
  .posts {
    margin-top: 10px;
  }

  .PostList img {
    height: 30px;
    width: 30px;
    vertical-align: middle;
  }

  ul {
    list-style: none;
    width: 100%;
    max-width: 1344px;
    margin: 0 auto;
  }

  ul li:not(:first-child) {
    padding: 9px;
    font-size: 15px;
    font-family: "Helvetica Neue", "Luxi Sans", "DejaVu Sans", Tahoma, "Hiragino Sans GB", STHeiti, sans-serif !important;
    font-weight: 400;
    background-color: white;
    color: #333;
    border-top: 1px solid #f0f0f0;
  }

  li:not(:first-child):hover {
    background: #f5f5f5;;
  }

  li:last-child:hover {
    background: white;
  }

  li span {
    line-height: 30px;
  }

  .allcount {
    width: 70px;
    display: inline-block;
    text-align: center;
    font-size: 12px;
  }

  .reply_count {
    color: #9e78c0;
    font-size: 14px;
  }

  .put_good, .put_top {
    background: #80bd01;
    padding: 2px 4px;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    -o-border-radius: 3px;
    color: #fff;
    font-size: 12px;
    margin-right: 10px;
  }

  .topiclist-tab {
    background-color: #e5e5e5;
    color: #999;
    padding: 2px 4px;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    -o-border-radius: 3px;
    font-size: 12px;
    margin-right: 10px;
  }

  .last_reply {
    text-align: right;
    min-width: 50px;
    display: inline-block;
    white-space: nowrap;
    float: right;
    color: #778087;
    font-size: 12px;
  }

  .toobar {
    height: 40px;
    background-color: #f5f5f5;
    border-radius: 10px 10px 0 0;
  }

  .toobar span {
    font-size: 14px;
    color: #80bd01;
    line-height: 40px;
    margin: 0 10px;
    cursor: pointer;
  }

  .toobar span:hover {
    color: #9e78c0;
  }

  a {
    text-decoration: none;
    color: black;
  }

  a:hover {
    text-decoration: underline;
  }

  .loading {
    text-align: center;
    padding-top: 300px;
  }
  .toobar span:hover{
      background-color: #80bd01;
    color: #fff;
    padding: 3px 4px;
    border-radius: 3px
  }
</style>